1. Department of Chemical and Materials Engineering, University of Alberta, 9211-116 Street NW., Edmonton, Alberta T6G 1H9, Canada
2. Department of Chemistry, University of Calgary, 2500 University Drive NW., Calgary, Alberta T2N 1N4, Canada
3. Engineering Research Center of Nano-Geomaterials of Ministry of Education, Faculty of Materials Science and Chemistry, China University of Geosciences, Wuhan, Hubei 430078, P. R. China
4. Canadian Light Source, 44 Innovation Blvd., Saskatoon, Saskatchewan S7N 2 V3, Canada
5. Department of Chemistry, Simon Fraser University, 8888 University Drive, Burnaby, British Columbia V5A 1S6, Canada